diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 89c836d54809..1bb20d841080 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -744,7 +744,8 @@ static int htlb_check_hinted_area(unsigned long addr, unsigned long len) struct vm_area_struct *vma; vma = find_vma(current->mm, addr); - if (!vma || ((addr + len) <= vma->vm_start)) + if (TASK_SIZE - len >= addr && + (!vma || ((addr + len) <= vma->vm_start))) return 0; return -ENOMEM; @@ -815,6 +816,8 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, return -EINVAL; if (len & ~HPAGE_MASK) return -EINVAL; + if (len > TASK_SIZE) + return -ENOMEM; if (!cpu_has_feature(CPU_FTR_16M_PAGE)) return -EINVAL; @@ -823,9 +826,6 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, BUG_ON((addr + len) < addr); if (test_thread_flag(TIF_32BIT)) { - /* Paranoia, caller should have dealt with this */ - BUG_ON((addr + len) > 0x100000000UL); - curareas = current->mm->context.low_htlb_areas; /* First see if we can use the hint address */ |